Regarding Workflow Error and Notification problem

Hi,

I am working on Workflow. I imported data <b>first time</b> in Data Manager and created <b>new</b> workflow. Now while "Launching" this workflow it is showing error "<b>The record is currently used in workflow</b>".

I was using this repository for other data with different workflow but i deleted all previous data and workflow. Why it is showing this error? When i have new set of data with new workflow than i think i should not show this error.

Other Question is regarding <b>Notification</b>:

To notify the person we have to make following changes :

1) Have to use Notify stencil and have to give e mail ids in User detail

2) In my server ini file i have to give my mail server name.

After making this changes I am not getting any mails. Please guide me for the same.

Please guide me how to rectify this error and what are the prerequisites?

Thanks in advance,

Ronak